Receiver.



PATENTED MAR. 5, 1907.

L. W. AUSTIN.

RECEIVER.

APPLICATION FILED 001'. 27. 1906.

LY! 'IEN TOR. 43W 411 I V] TA [5.8191115 UNITED STATES PATENT oEEIoE.

LOUIS W. AUSTIN, OF WASHINGTON, DISTRICT OF, COLUMBIA, ASSIGNOR TONATIONAL ELECTRIC SIGNALING COMPANY, OF PITTSBURG, PENNSYL- VANIA, ACORPORATION OF NEW JERSEY.

RECEIVER.

Patented March 5, 1907.

Application filed October 27, 1906. Serial No, 340,845.

To all whom it may concern: I

Be it known that I, LOUIS W. AUsTIN, a citizen of the United States, anda resident of Washington, inv the District of Columbia, have inventedcertain new and useful Improvements in Receivers, of which the followingis a specification.

The invention herein described relates to certain improvements inreceivers for electric receiving, and more especially for signaling byelectromagnetic Waves.

The invention is hereinafter more fully descrlibedl and claimed. I f

n t e accompanyin drawin orming a part of this specificatio ii, the figure is a diagrammatic view illustrating my improvement.

In a previous application I have described and claimed a receiver forelectromagnetic waves consisting of a thermo-electric couple having oneof its members or elements formed of tellurium, the other being formed,of aluminium or other suitable metal or alloy.

I have found that a thermo-electric element consisting of telluriumand'silicon or alloys of these metals is especially sensitive and:ossesses many advantages as a receiver for e ctromagnetic Waves.

In the drawing forming a part of this specification, 7 is an aerialgrounded, as shown.

3 is a wedge-shaped piece of tellurium mounted on a wire 4, and 1 is arod of silicon mounted on a hard-rubber sheet 2.

6 is an adjusting-springcontrolled by the screw 5.

8 is a telephone-receiver. On the passage of the electrical oscillationsthrough the thernio-couple formed of the elements 1 and 3 the telephoneproduces an indication or signal;

What I claim is- 1. In a system of signaling, a receiver consisting of athermo-couple having as its elements tellurium and silicon.

2. In a system of signaling by electromagnetic waves, a receiverconsisting of a thermocouple having as its elements tellurium andsilicon.

Signed at Brant Rock, Marshfield township, in the county of Plymouth andState of Massachusetts,'this 24th day of October, A. D. 1 906.

LOUIS W. AUSTIN.

Witnesses:

JESSIE E. BENT, ADALEINE W. HULL.

